Finding the Fourth Proportional to 2,156,086.80, 3,234,139.80 and 558,536.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156,086.80 : 3,234,139.80 = 558,536.40 : x
2. Step 2: Convert to fraction form
   2,156,086.80/3,234,139.80 = 558,536.40/x
3. Step 3: Cross multiply
   2,156,086.80x = 3,234,139.80 × 558,536.40
4. Step 4: Simplify right side
   2,156,086.80x = 1,806,384,800,988.72
5. Step 5: Solve for x
   x = 1,806,384,800,988.72/2,156,086.80
6. Step 6: Final answer
   x = 837,807.09